What is background radiation due to?
  • Nuclear fallout
  • Rocks
  • Cosmic rays
  • All of the above
What is an alpha particle?
  • A particle which has one neutron and one proton
  • A proton
  • A neutron
  • A particle which has two neutrons and two protons
What is a beta particle?
  • A low energy electron
  • A high energy proton
  • A high energy electron
  • A low energy proton
What is gamma radiation?
  • A form of electromagnetic radiation
  • An electron
  • A proton
  • A neutron
Which type of radiation would be blocked by a thin sheet of paper?
  • Alpha
  • Beta
  • Gamma
  • None of the above
Which type of radiation would be blocked by a thin sheet of aluminum - but not by paper?
  • Alpha
  • Beta
  • Gamma
  • They all get blocked
Which type of radiation would be blocked by several inches of lead - but not by a thin sheet of aluminum or paper?
  • Alpha
  • Beta
  • Gamma
  • Beta and Gamma
What types of radiation can be deflected by electric and magnetic fields?
  • Alpha
  • Alpha and Beta
  • Alpha and Gamma
  • Beta and Gamma
What is the half-life of a radioactive isotope?
  • The time it takes to be deadly to humans
  • The number of isotopes in a sample
  • The average time it takes for the number of nuclei of the isotope in a sample to halve
  • The time it takes for the isotope in a sample to decrease by a quarter
Which radiation is deflected more by electric and magnetic fields?
  • Alpha
  • Beta
  • Gamma
  • None are deflected
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